Select component from menus below and Arrow Weight
will add up everytime a menu selection is changed.
If you do not have one of the components then leave the
default, it will not add any weight to the total. The fletch weights
are based on Trueflight Feathers(F) and Easton Vanes(V) these
were the only published weights that I could find.

Arrow Weight: Grn

Point
Weight

Point
Insert

Shaft
Type

Shaft
Length

Fletch
Type

Number of
Fletches

Nock
Adaptor

Nock
Size

After all selections have been made click
here to calculate estimated FOC(Front of Center)

% (see
explanation below)

The formula on my page is from Larry Wise's "Tuning & Silencing Your
Bowhunting Shooting System, 3rd Ed" book. If memory serves me correctly he attributed
that FOC formula to AFC(now part of Carbon Express I think). It will yield a
slightly different result than Easton's method.

Inasmuch as neither the Easton method nor AFC method calculates the "real"
FOC of the arrow(which would be a real hassle - explanation below), the AFC method I
believe is truer to the actual method which inlcudes the entire length. In any case, I
would use either calculation of FOC as a "figure of merit" for comparison
between setups, rather than an exact measurement.

REAL FOC explanation - The actual FOC of an arrow is dependent on the distance between
the arrow Center of Gravity(CG) in front of the arrow Center of Pressure(CP). It is the CP
measurement that both FOC methods approximate by taking the halfway measurement of the
finished or unfinished(with or without point, AFC vs Easton). To see the real method of
calculating CP for an arrow click on the following link;http://homepage.ntlworld.com/joetapley/cop2.htm

I think it's obvious from the diagrams that adding a broadhead, especially a fixed one
upsets the real CP measurement considerably, in the Easton FOC method there's no effect
while in the AFC there is a penalty because of the length(not really enough though). The
diagrams from Joe Tapley's page should help explain why an arrow which flys great with
field points suddenly goes to crap with broadheads even though the "apparent"
FOC seems reasonable.